Sealed valve



J ne 2, 1925.

J. J- CAVETT SEALED VALVE Filed Sept. 28. 1922 J Ca t-E.

VIII/(1mm Patent rlime 2, I

If? l JOHN J; UAVET'A, E JOHNSTO'WN, EEWNSZLVANM,

enema!) venue.

Application flledtaeptember 2d, 1922. Serial Ito. snares.

rcertain new and useful Improvements in Sealed Valves and I do herebydeclare the following to be a full, clear, and exact de-' scription ofthe invention, such as will onable others'skilled in the art to which itappertains to make and use the same.

My invention relates generally to a valve which is applicable for use inconnection with branch pipes or feeders which discharge gases into amain pipe and consists of a particular arrangement and construction forsealing such a valve, while at the same time allowing water or otherliquids to pass by it, while maintaining the gas seal when closed. v

fine of the applications of this valve is to, each of the goose necks orrising pipes, one of which is connected with each coke oven or a batterycomprising a number of coke ovens and these pipes discharge the gas fromeach coke oven into a general collecting main which is ordinarilylocated near or at the top of the battery of ovens. After the oven hasbeen charged with coal or other materials and while the various otheropenings are closed during the distilling period, my valve is normallyopen allowing the distillate gases from the oven to be discharged intothe gas collecting main.

At intervals of 18 hours, more or less, the oven has to be rechargedwith coal after the coke has been discharged therefrom and at with an nthis time the oven doors are open and the chargin hole is also open, sothat'during this period my valve is closed so as to pre vent access ofair, etc, into the collecting main.

My valve may be made of conical form turned annular lip around its lowerportion so that between this lip and the body of the valve an annularspace is provided of approximately triangular section with roundedcorners. A stream or spray of ammonia liquor or water, is dischargedinto the goose neck of the rising pipe and is discharged thence into andpast the valve into the collecting main, for the purpose of absorbingthe ammonia or other by-products.

Some tar may also be deposited and a little of this may also remain inthe annular illustrated.

space of my valve, The liquid tli'us discharged into or condensed fromthe gases in the rising pipe or goose neck thereof will keep the annularspace in my valve sealed as the up turned lip of the valve is of such adepth as to maintain the necessary depth of liquid therein and thisheight is greater than the gas pressure in order to maintain theclosure,

My valve is seated-against a seat ring and this ring may'have notches oropenings of any form provided in or near its lower edge so that whenclosed the liquids discharged into the valve may still flow past thevalve and maintain the gas seal, while at the same time permitting thepassing of theliquids.

My valve when closed 15 therefore gas tight, but at the same timepermits liquids to pass. The notchesor openings in my valve seat may beof any form desired and my valve may be either conical or of any othershape and the cross-sections of the annular space may be triangular,rectangular, or'of any other contour as may be readily understood by anyone skilled in this art.

The valve may be of disk shape or it may be conical to aid in itsseating, or it may be rectangular or of any other shape, the essentialfeature being the upturned edge to retain liquid.

Having thus given a general description of my invention, I will now, inorder to make the matter more clear, refer to the annexed sheet ofdrawings, which form part of this specification, and in which likecharacters refer to like parts:

Figure 1 is a vertical sectional elevation of a rising pipe connectionon thevtop of a battery of coke ovens, between one of thecoke ovens andthe collecting main; Figure 2 is a bottom plan view of the valve seat;Figure 3 is a vertical section through the valve seat; Figure 4 is avertical section through the valve; Figure 5 is a top plan view of thevalve, and Figure 6 is a detail view drawn on a larger scaleillustrating the manner of forming the liquid seal bo tween, the valveseat and the valve.

Referring now to the characters of references on the drawings lis thetop portion of a coke oven; 2 is part of the frame work or bracket whichsupports the collecting main 3; at is a lease ring seated in the to ofthe coke oven into which the stan pipe 5 is connected Connected to theupper part of the stand pipe 5, is the goose neck pipe 6, and this isprovided with the usual su 'inging door or cap 7 to permit access to theopening 8 therein; this cap being provided with a hinge 9 asillustrated. The goose neck is provided with a downwardly inclinedportion 10, which is integrally connected with the valve casing 11, thelower portion of which has an annular flange 12 as illustrated. Anannularcollar 13 is secured to the upper portion of the collecting main3 and to the flange 12 by means of its flanges 14, by the bolts 15.Between these two portions is inserted the flange 17 of the valve seatcasing 16, and thereby it is secured in place. The valve 19 isillustrated as of conical form and provided with an upturned edge 18forming an annular space or approximately triangular section betweensaid edge and the body of the valve as illustrated. The valve seatcasing 16 has the valve seat 20 on its lower edge and the sealing fluidin the annular space of the valve is 21. The valve 19 is provided with asupporting'rod or stem 22 secured thereto, the upper end of which passesthrough the cover 23 on the top of the valve casing and this rod has aclevis member 24 at its upper end preferably formed integrallytherewith. To the clevis is pivoted a lever 26, which is rotatablymounted on the support25, and provided with a removable counter-weight27 at its outer end. 1

The valve seat portion 16 is provided with notches 28, in the bottomedge or seat thereof, which will allow liquids to pass by said valvewhen closed and the height of liquids retained by the upturned edge ofthe valve 18; is such as to overcome the gas pressure and prevent thepassage. of gas when the valve is closed, while allowing the spray orliquids to pass through the notches 28, thereby discharging over theupturned edge of the valve into the collecting main. The water, ammonialiquor, etc, is discharged into the goose neck and thence into thecollecting main through the spray pipe 29, while 30'is the liquid in thebottom'of the collecting main. A

When the parts are in position, illustrated by the ,full lines in Figure1, the valve is closed and consequently the doors and charging openingsfor the coke oven may be opened for charging, etc, and no air orother/gasesca'n be discharged from the oven into the collecting main orvice versa.

After the oven is charged, the openings and doors thereof are closed andthe distillation of gas begins, the weight 27 is re moved from lever 26and the valve 19 is allowed to drop by gravity to the position shown bydotted lines in Figure 1, whereby gases are discharged into thecollecting main and over the valve, and the water or M"- ea ers monialiquor, etc., from the spray pipe 29, is discharged directly into thecollecting main.

When the valve is closed the liquid passes through the notches in thevalve seat and thence through the annular space in the valve and overthe valve edge into the collecting main.

Although I have shown and described my invention in considerable detail.I do not wish to be limited to the exact and specific details thereof.as shown and described, but may use such modifications in, substitutionstor, or equivalents thereof as are embraced within the scope of myinvention, or as pointed out in the claims.

Having thus described my invention, what I claim and desire to secure byLetters Patcut is I 1. A valve having an lip-turned edge portion adaptedto retain liquid, and a seat member having openings in its lower endagainst which end said valve is adapted to rest, thereby allowing liquidto pass, while providing a gas seal.

2. A valve having an up-turned edge adapted to retain liquid. a valveseat adapted to co-operate therewith having notches to allow thedischarge of liquid therethrough when the valveis seated. while at thesame time maintaining a gas seal.

3. A valve having an approximately conical body portion with anup-turned lower edge, thus providing a continuous annular space betweenthe edge and the body, a 'valve seat member adapted to contact at itslower end with said valve between the body portion and said up-turnededge and provided with openings in its lower end, and means forsupplying liquid to the valve, whereby the valve is adapted to be sealedagainst the passage of gas while permitting liquid to pass. y

4. A valve having an approximately conical body portion with anup-turned edge, thus providing a continuous annular space between thesame and the body, a notched valve seat adapted to contact with saidvalve between the body portion and the rip-turned edge thereof. andmeans forsupplyingliquid to the valve, whereby the valve is adapted tohe gas sealed when seated while allowing liquid to pass.

5. A valve having an up-turned edge portion adapted to retain liquid, avalve seat adapted to co-operate therewith, means for supplying liquidto said valve, a lever connected with the valve and provided with aremovable weight adapted to temporarily hold the valve in closedposition. said valve being adapted to be held open by its own weightwhen said removable weight is removed.

6. A valve comprising a conical body portion with an lip-turned edge,thus providing notches in its contact ed e,

a continuous an riular space between the edge and body, a valve seatadapted to contact with saidvalve between the bodyrtion and saidup-turned edge, sald seat aving means for s1; plying liquid to the vave, whel eby it Is adapted to beseeled against the'passage of game whilepermittin 1i uid'to pass, a valve stem secured to sai v ve, a pivotedlever cohnected to said stem and a weight adapted 10 In wltness whereofI hereuhto afiix my J5 signature,

JOHN J. CAVETT,

be said weight or

